1 /*
2  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include "compat.h"
18 
19 #include <stdlib.h>
20 #include <string.h>
21 
22 #include "telescope.h"
23 #include "utils.h"
24 
25 void
26 tofu_init(struct ohash *h, unsigned int sz, ptrdiff_t ko)
27 {
28 	struct ohash_info info = {
29 		.key_offset = ko,
30 		.calloc = hash_calloc,
31 		.free = hash_free,
32 		.alloc = hash_alloc,
33 	};
34 
35 	ohash_init(h, sz, &info);
36 }
37 
38 struct tofu_entry *
39 tofu_lookup(struct ohash *h, const char *domain, const char *port)
40 {
41 	char		buf[GEMINI_URL_LEN];
42 	unsigned int	slot;
43 
44 	strlcpy(buf, domain, sizeof(buf));
45 	if (port != NULL && *port != '\0' && strcmp(port, "1965")) {
46 		strlcat(buf, ":", sizeof(buf));
47 		strlcat(buf, port, sizeof(buf));
48 	}
49 
50 	slot = ohash_qlookup(h, buf);
51 	return ohash_find(h, slot);
52 }
53 
54 void
55 tofu_add(struct ohash *h, struct tofu_entry *e)
56 {
57 	unsigned int	slot;
58 
59 	slot = ohash_qlookup(h, e->domain);
60 	ohash_insert(h, slot, e);
61 }
62 
63 void
64 tofu_update(struct ohash *h, struct tofu_entry *e)
65 {
66 	struct tofu_entry *t;
67 
68 	if ((t = tofu_lookup(h, e->domain, NULL)) == NULL)
69 		tofu_add(h, e);
70 	else {
71 		strlcpy(t->hash, e->hash, sizeof(t->hash));
72 		t->verified = e->verified;
73 		free(e);
74 	}
75 }
76 
77 void
78 tofu_temp_trust(struct ohash *h, const char *host, const char *port,
79     const char *hash)
80 {
81 	struct tofu_entry *e;
82 
83 	if ((e = calloc(1, sizeof(*e))) == NULL)
84 		abort();
85 
86 	strlcpy(e->domain, host, sizeof(e->domain));
87 	if (*port != '\0' && strcmp(port, "1965")) {
88 		strlcat(e->domain, ":", sizeof(e->domain));
89 		strlcat(e->domain, port, sizeof(e->domain));
90 	}
91 	strlcpy(e->hash, hash, sizeof(e->hash));
92 	e->verified = -1;
93 
94 	tofu_update(h, e);
95 }